Grant County, South Dakota

Grant County, South Dakota
Grant County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 7,556. The county seat is Milbank. The county was founded in 1873 and organized in 1878. It is named for Ulysses S. Grant, 18th President of the United States.
Geography
Grant County lies on the east side of South Dakota. Its east boundary line abuts the west boundary line of the state of Minnesota. The terrain consists of rolling hills, sloping to the northeast. The area is largely devoted to agriculture. The highest point of the terrain is on the county's south boundary line, towards its southwest corner, at ASL.
Grant County has a total area of , of which is land and (0.9%) is water.
The lowest point in the state of South Dakota is located on Big Stone Lake at Big Stone City in Grant County, adjacent to Ortonville, Minnesota, where the lake flows into the Minnesota River.
Major highways
Interstate 29
U.S. Route 12
U.S. Route 81
South Dakota Highway 15
South Dakota Highway 20
South Dakota Highway 109
South Dakota Highway 123
South Dakota Highway 158
Adjacent counties
Roberts County—north
Big Stone County, Minnesota—northeast
Lac qui Parle County, Minnesota—east
Deuel County—south
Codington County—southwest
Day County—west
Protected areas
Mazeppa State Public Shooting Area
Mud Lake State Public Shooting Area
Lakes
Big Stone Lake (adjacent)
Crooked Lake
LaBolt Lake
Lake Albert
Lake Farley
Lonesome Lake (partial)
Mud Lake
Myers Lake
Summit Lake
Twin Lakes
Demographics
2020 census
As of the census of 2020, there were 7,556 people.
2010 census
As of the census of 2010, there were 7,356 people, 3,089 households, and 2,076 families in the county. The population density was . There were 3,526 housing units at an average density of . The racial makeup of the county was 97.1% white, 0.5% American Indian, 0.3% Asian, 0.1% black or African American, 1.1% from other races, and 0.8% from two or more races. Those of Hispanic or Latino origin made up 2.3% of the population. In terms of ancestry, 49.9% were German, 16.8% were Norwegian, 8.9% were Irish, 6.7% were Swedish, 5.6% were English, and 5.2% were American.
Of the 3,089 households, 28.1% had children under the age of 18 living with them, 57.2% were married couples living together, 6.1% had a female householder with no husband present, 32.8% were non-families, and 29.6% of all households were made up of individuals. The average household size was 2.35 and the average family size was 2.89. The median age was 45.1 years.
The median income for a household in the county was $42,625 and the median income for a family was $56,250. Males had a median income of $36,204 versus $25,567 for females. The per capita income for the county was $22,887. About 7.0% of families and 11.6% of the population were below the poverty line, including 13.8% of those under age 18 and 17.8% of those age 65 or over.
Communities
Cities
Big Stone City
Milbank (county seat)
Towns
Albee
La Bolt
Marvin
Revillo
Stockholm
Strandburg
Twin Brooks
Unincorporated communities
Troy
Townships
Adams
Alban
Big Stone
Blooming Valley
Farmington
Georgia
Grant Center
Kilborn
Lura
Madison
Mazeppa
Melrose
Osceola
Stockholm
Troy
Twin Brooks
Vernon
Politics
Grant County voters have been reliably Republican for decades. In only three national elections since 1948 has the county selected the Democratic Party candidate.
See also
National Register of Historic Places listings in Grant County, South Dakota
References
1878 establishments in Dakota Territory
Populated places established in 1878